remcos | a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665

General

Target

a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
Size

2.1MB
MD5

16e210feb0e8e06172d167f9b6fa56d0
SHA1

8abfac6dd663323c6e1b86a00d7c61ef9e6e4206
SHA256

a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665
SHA512

6aaa8cba97c779a940cdcc275e5bb774424cceb9a4e644bd713f7722dd604f17427379597670a971ed52f71fbcfc83e7267c3c53f7783728393dfc81edd019db
SSDEEP

24576:+D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneLKJJb:+p7E+QrFUBgq21

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe

Executes dropped EXE 2 IoCs

pid	Process
2388	sbietrcl.exe
1700	sbietrcl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 1700	2388	sbietrcl.exe	87

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
2388	sbietrcl.exe
2388	sbietrcl.exe
2388	sbietrcl.exe
2388	sbietrcl.exe
2388	sbietrcl.exe
2388	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
Token: SeDebugPrivilege	2388	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4412 wrote to memory of 2388	4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe	84
PID 4412 wrote to memory of 2388	4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe	84
PID 4412 wrote to memory of 2388	4412	a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe	84
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87
PID 2388 wrote to memory of 1700	2388	sbietrcl.exe	87

C:\Users\Admin\AppData\Local\Temp\a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe
"C:\Users\Admin\AppData\Local\Temp\a0689d1813455bd0dac6fd38c1c937c282c5e50082613fd2efb572f371909665N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4412
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
2.1MB

MD5
212c3b417d0e001945cc6344f4ab9c34

SHA1
256c59c5d419c14dc92d291b7fc9fc669bea12f9

SHA256
665634e0536fe0fee0931abc233060939e241fd5dded75dd6e9b8f9c907cc5ff

SHA512
846fd126ec98e914c976f10c851a656a34ca836937d80e644cf331a4bf213afaa9a87e943469cd78cefe0e4f37080c586f40a9f063ee09dfcf93d679ab6652c8

Download Submit
memory/1700-37-0x0000000000610000-0x0000000000627000-memory.dmp

Filesize
92KB

Download
memory/2388-41-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/2388-34-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/2388-33-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/2388-32-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/2388-31-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-5-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-30-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-19-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-18-0x0000000074EC2000-0x0000000074EC3000-memory.dmp

Filesize
4KB

Download
memory/4412-6-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-0-0x0000000074EC2000-0x0000000074EC3000-memory.dmp

Filesize
4KB

Download
memory/4412-2-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/4412-1-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads